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Star image fusion and star recognition of multi-FOV star sensor
Proceedings of 2014 IEEE Chinese Guidance, Navigation and Control Conference, 2014A star image fusion method based on coordinate transformation is presented for a multi-FOV star sensor. By using coordinate transformation, simulated star images are generated and images from different FOVs are fused in the same coordinate system. Star image fusion is combined with triangle algorithm which is widely applied, and the star recognition ...
Junpeng Hua, Tao Zhang, Hailong Zhu
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An Autonomous Predicted Star Locations Algorithm for Star Sensor
Applied Mechanics and Materials, 2014The larger area threshold scan window in star image is scanned with conventional star tracking algorithm under large maneuvering of the vehicle. This results that the number of calculating angular separation between two stars is increased. So the update rate of star sensor is decreased and the feasibility of errors star locations is increased.
Xun Jiang Zheng +2 more
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Star Detectability Analysis of Daytime Star Sensor
Journal of the Korean Society for Aeronautical & Space Sciences, 2005This paper discusses the daytime atmospheric conditions and the possibility of daytime star detection with the purpose of practical use of the star sensor for daylight navigation. In order to estimate the daytime atmospheric data, we use the standard atmospheric model (LOWTRAN 7), from which atmospheric transmittance and radiance from background sky ...
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Study on guide star selection for infrared star sensors
SPIE Future Sensing Technologies, 2019Star sensors achieve very accurate attitudes for space vehicles by comparing observed stars in their field of view with the cataloged guide stars. Guide star selection is a key work during the star sensor designing. Infrared star sensor provides accuracy navigation information to air vehicles which fly near the ground in the atmosphere.
Feng Wu +4 more
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Optimization of guide star catalog for daytime star sensors
International Journal of Modern Physics B, 2019Daytime star sensor provides accuracy navigation information to air vehicles near the ground in the daytime by observing stars. It has been an important development of modern star sensors. In order to achieve a high signal-to-noise ratio, daytime star sensors work in the infrared band to avoid interferences from sky background.
Feng Wu +6 more
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Research and simulation of star capture based on star sensor
SPIE Proceedings, 2009The starlight refraction navigation is considered to be one of the most promising methods for satellite autonomous navigation. This paper mainly did research on the capture of navigation stars in starlight refraction navigation. By studying on the geometry relation between measurement star and satellite, a measurement star orientation method can be ...
Jing Hu, Bo Yang, Chenhao Wu
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The Blurred Stars Image Preprocessing Technique of Star Sensor
2012 Symposium on Photonics and Optoelectronics, 2012When the star sensor with high dynamic rotation, blurred image preprocessing technique of the star sensor is need to discuss in detailed. Firstly, the motion-blurred image model in star sensor is given. Then, applying sub-windows technique to improve the dynamics of the star sensor and dynamic compensation for the area starlight reached, which adopt ...
Xiao fang Shen, Chao shan Liu
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A Novel Star Pattern Recognition Algorithm for Star Sensor
2007 International Conference on Machine Learning and Cybernetics, 2007Triangle algorithm is used widely in the field of star pattern recognition, but it also has disadvantage that recognition reliability decreases seriously in areas where there are many stars existing small angular separation. The character match algorithm can solve this problem and it has small size of guide star database, but it can not recognize a ...
Ming Jiang +4 more
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Improved TRIAD for star sensor
Proceedings of 2011 International Conference on Computer Science and Network Technology, 2011TRIAD is an attitude determination algorithm, which only uses two observed vectors to calculate the attitude of spacecrafts. It has disadvantage of asymmetry using the two observed vectors and not making full use of all the observed star vectors captured by the star sensor.
null Chen Feng-gen +3 more
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Advanced Sensor Systems and Applications VIII, 2018
The star sensor is a high-precision attitude measurement device widely used in aerospace vehicles. One of the most significant influence on the accuracy of star sensor is the operating temperature. Experiments show that with the increase of temperature, the dark current noise of CMOS increases exponentially, which greatly reduces the Signal-to-Noise ...
Fei Xing, Ting Sun, Songsong Ji
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The star sensor is a high-precision attitude measurement device widely used in aerospace vehicles. One of the most significant influence on the accuracy of star sensor is the operating temperature. Experiments show that with the increase of temperature, the dark current noise of CMOS increases exponentially, which greatly reduces the Signal-to-Noise ...
Fei Xing, Ting Sun, Songsong Ji
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